public object Materialize(ElasticResponse response)
{
var enumerator = response.hits.hits.GetEnumerator();
if (!enumerator.MoveNext())
{
if (defaultIfNone)
{
return(elementType.IsValueType ? Activator.CreateInstance(elementType) : null);
}
else
{
throw new InvalidOperationException("Sequence contains no elements");
}
}
var current = enumerator.Current;
if (throwIfMoreThanOne && enumerator.MoveNext())
{
throw new InvalidOperationException("Sequence contains more than one element");
}
return(itemCreator(current));
}
private async Task <object> ExecuteAsync(ElasticTranslateResult translation, CancellationToken cancellationToken = default(CancellationToken))
{
Log.Debug(null, null, "Executing query against document '{0}'", translation.SearchRequest.IndexType);
try
{
ElasticResponse response;
if (translation.SearchRequest.Query == ConstantCriteria.False)
{
response = new ElasticResponse();
}
else
{
response = await requestProcessor.SearchAsync(translation.SearchRequest, cancellationToken).ConfigureAwait(false);
if (response == null)
{
throw new InvalidOperationException("No HTTP response received.");
}
}
var result = translation.Materializer.Materialize(response);
response.hits?.hits?.Clear(); // Clear list aggressively
return(result);
}
catch (AggregateException ex)
{
ExceptionDispatchInfo.Capture(ex.InnerException).Throw();
return(null); // Never called, as the above code re-throws
}
}
/// <inheritdoc/>
public async Task <object> ExecuteAsync(Expression expression, CancellationToken cancellationToken = default(CancellationToken))
{
Argument.EnsureNotNull("expression", expression);
var translation = ElasticQueryTranslator.Translate(Mapping, expression);
Log.Debug(null, null, "Executing query against document '{0}'", translation.SearchRequest.DocumentType);
try
{
ElasticResponse response;
if (translation.SearchRequest.Filter == ConstantCriteria.False)
{
response = new ElasticResponse();
}
else
{
response = await requestProcessor.SearchAsync(translation.SearchRequest, cancellationToken);
if (response == null)
{
throw new InvalidOperationException("No HTTP response received.");
}
}
return(translation.Materializer.Materialize(response));
}
catch (AggregateException ex)
{
ExceptionDispatchInfo.Capture(ex.InnerException).Throw();
return(null); // Never called, as the above code re-throws
}
}
public string ElasticResponseConstructor_OnValidInput_CreatesValidResponse()
{
var defaultResponse = new ElasticResponse();
var serializedResponse = JsonConvert.SerializeObject(defaultResponse);
return(serializedResponse);
}
public object Materialize(ElasticResponse response)
{
Argument.EnsureNotNull("response", response);
using (var enumerator = response.hits.hits.GetEnumerator())
{
if (!enumerator.MoveNext())
{
if (defaultIfNone)
{
return(TypeHelper.CreateDefault(elementType));
}
else
{
throw new InvalidOperationException("Sequence contains no elements");
}
}
var current = enumerator.Current;
if (throwIfMoreThanOne && enumerator.MoveNext())
{
throw new InvalidOperationException("Sequence contains more than one element");
}
return(projector(current));
}
}
private object ExecuteInternal(Expression expression)
{
var translation = ElasticQueryTranslator.Translate(Mapping, Prefix, expression);
var elementType = TypeHelper.GetSequenceElementType(expression.Type);
Log.Debug(null, null, "Executing query against type {0}", elementType);
try
{
ElasticResponse response;
if (translation.SearchRequest.Filter == ConstantCriteria.False)
{
response = new ElasticResponse();
}
else
{
response = AsyncHelper.RunSync(() => requestProcessor.SearchAsync(translation.SearchRequest));
if (response == null)
{
throw new InvalidOperationException("No HTTP response received.");
}
}
return(translation.Materializer.Materialize(response));
}
catch (AggregateException ex)
{
ExceptionDispatchInfo.Capture(ex.InnerException).Throw();
return(null); // Never called, as the above code re-throws
}
}
public async Task <object> ExecuteAsync(Expression expression, CancellationToken cancellationToken = new CancellationToken())
{
var translation = ElasticQueryTranslator.Translate(this.Mapping, expression);
try
{
ElasticResponse response;
if (translation.SearchRequest.Filter == ConstantCriteria.False)
{
response = new ElasticResponse();
}
else
{
response = await this.requestProcessor.SearchAsync(translation.SearchRequest, cancellationToken);
if (response == null)
{
throw new InvalidOperationException("No HTTP response received.");
}
}
return(translation.Materializer.Materialize(response));
}
catch (AggregateException ex)
{
ExceptionDispatchInfo.Capture(ex.InnerException).Throw();
return(null); // Never called, as the above code re-throws
}
}
public ElasticResult <T[]> GetEntitiesFromElasticResponse <T>(ElasticResponse <T> response) where T : class
{
// If request bad executed.
return(!response.Success
? ElasticResult <T[]> .FailResult(response.Message)
: ElasticResult <T[]> .SuccessResult(
response.Response.Hits.Select(h => h.Source).Where(s => s != null).ToArray()));
}
/// <summary>
/// Determine whether at a given query response contains any hits.
/// </summary>
/// <param name="response">The <see cref="ElasticResponse"/> to check for emptiness.</param>
/// <returns>true if the source sequence contains any elements; otherwise, false.</returns>
public object Materialize(ElasticResponse response)
{
if (response.hits.total.value < 0)
{
throw new ArgumentOutOfRangeException(nameof(response), "Contains a negative number of hits.");
}
return(response.hits.total.value > 0);
}
/// <summary>
/// Determine whether at a given query response contains any Hits.
/// </summary>
/// <param name="response">The <see cref="ElasticResponse"/> to check for emptiness.</param>
/// <returns>true if the source sequence contains any elements; otherwise, false.</returns>
public object Materialize(ElasticResponse response)
{
if (response.Hits.Total < 0)
{
throw new ArgumentOutOfRangeException("response", "Contains a negative number of Hits.");
}
return(response.Hits.Total > 0);
}
/// <summary>
/// Materialize the result count for a given response.
/// </summary>
/// <param name="response">The <see cref="ElasticResponse"/> to obtain the count value from.</param>
/// <returns>The result count expressed as either an int or long depending on the size of the count.</returns>
public object Materialize(ElasticResponse response)
{
if (response.hits.total < 0)
{
throw new ArgumentOutOfRangeException(nameof(response), "Contains a negative number of hits.");
}
return(Convert.ChangeType(response.hits.total, returnType));
}
/// <summary>
/// Materialize the facets from an ElasticResponse into a List with a single CLR object as determined
/// by the projector.
/// </summary>
/// <param name="response">ElasticResponse to obtain the facets from.</param>
/// <returns>List containing a single CLR object with these facets projected onto them.</returns>
public override object Materialize(ElasticResponse response)
{
Argument.EnsureNotNull("response", response);
var element = MaterializeSingle(response);
var listType = typeof(List <>).MakeGenericType(ElementType);
return(element == null
? Activator.CreateInstance(listType)
: manyMethodInfo.MakeGenericMethod(ElementType).Invoke(null, new[] { element }));
}
public void CountMaterializerThrowsForNegativeCount()
{
var response = new ElasticResponse {
hits = new Hits {
hits = new List <Hit>(), total = -1
}
};
var materializer = new CountElasticMaterializer();
Assert.Throws <ArgumentOutOfRangeException>(() => materializer.Materialize(response));
}
public void ThrowsWhenNegativeHits()
{
const int total = -1;
var response = new ElasticResponse {
hits = new Hits {
hits = new List <Hit>(), total = total
}
};
var materializer = new AnyElasticMaterializer();
Assert.Throws <ArgumentOutOfRangeException>(() => materializer.Materialize(response));
}
public void ThenWillReturnEmptyListIfHitsIsNull()
{
//Arrange
var response = new ElasticResponse <string>();
//Act
var responseItems = response.Items;
//Assert
responseItems.Should().NotBeNull();
responseItems.Should().BeEmpty();
}
public void MaterializeReturnsEmptyListWhenHitsHitsAreEmpty()
{
var materializer = new ListHitsElasticMaterializer(MaterializerTestHelper.ItemCreator, typeof(SampleClass));
var response = new ElasticResponse {
hits = null
};
var materialized = materializer.Materialize(response);
var materializedList = Assert.IsType <List <SampleClass> >(materialized);
Assert.Empty(materializedList);
}
public void MaterializeWithNoFacetsReturnsBlankList()
{
var materializer = new ListTermlessFacetsElasticMaterializer(r => r, typeof(SampleClass), typeof(string));
var response = new ElasticResponse {
facets = new JObject()
};
var actual = materializer.Materialize(response);
var actualList = Assert.IsType <List <SampleClass> >(actual);
Assert.Empty(actualList);
}
public void ReturnsTrueWhenOneOrMoreHits(int total)
{
var response = new ElasticResponse {
hits = new Hits {
hits = new List <Hit>(), total = total
}
};
var materializer = new AnyElasticMaterializer();
var actual = materializer.Materialize(response);
Assert.Equal(true, actual);
}
public void CountMaterializerReturnsIntCount()
{
const int expected = int.MaxValue;
var response = new ElasticResponse {
hits = new Hits {
hits = new List <Hit>(), total = expected
}
};
var materializer = new CountElasticMaterializer(typeof(int));
var actual = materializer.Materialize(response);
Assert.Equal(expected, actual);
}
internal static IEnumerable <string> GetResultSummary(ElasticResponse results)
{
if (results == null)
{
yield return("nothing");
}
else
{
if (results.hits?.hits != null && results.hits.hits.Count > 0)
{
yield return(results.hits.hits.Count + " hits");
}
}
}
public void ReturnsFalseWhenNoHits()
{
const int total = 0;
var response = new ElasticResponse {
hits = new Hits {
hits = new List <Hit>(), total = total
}
};
var materializer = new AnyElasticMaterializer();
var actual = materializer.Materialize(response);
Assert.Equal(false, actual);
}
/// <summary>
/// Materialize the result count for a given response.
/// </summary>
/// <param name="response">The <see cref="ElasticResponse"/> to obtain the count value from.</param>
/// <returns>The ewaulr count expressed as either an int or long depending on the size of the count.</returns>
public object Materialize(ElasticResponse response)
{
if (response.hits.total < 0)
{
throw new ArgumentOutOfRangeException("response", "Contains a negative number of hits.");
}
if (response.hits.total <= int.MaxValue)
{
return((int)response.hits.total);
}
return(response.hits.total);
}
public void CountMaterializerReturnsZeroCount()
{
const int expected = 0;
var response = new ElasticResponse {
hits = new Hits {
hits = new List <Hit>(), total = expected
}
};
var materializer = new CountElasticMaterializer();
var actual = materializer.Materialize(response);
Assert.Equal(expected, actual);
}
public void CountMaterializerReturnsLongCount()
{
const long expected = ((long)int.MaxValue) + 1;
var response = new ElasticResponse {
hits = new Hits {
hits = new List <Hit>(), total = expected
}
};
var materializer = new CountElasticMaterializer();
var actual = materializer.Materialize(response);
Assert.Equal(expected, actual);
}
public object Materialize(ElasticResponse response)
{
Argument.EnsureNotNull("response", response);
var hits = response.hits;
if (hits == null || hits.hits == null || !hits.hits.Any())
{
return(Activator.CreateInstance(typeof(List <>).MakeGenericType(elementType)));
}
return(manyMethodInfo
.MakeGenericMethod(elementType)
.Invoke(null, new object[] { hits.hits, projector }));
}
/// <summary>
/// Materialize the facets from an ElasticResponse into a List of CLR objects as determined
/// by the projector.
/// </summary>
/// <param name="response">ElasticResponse to obtain the facets from.</param>
/// <returns>List of CLR objects with these facets projected onto them.</returns>
public object Materialize(ElasticResponse response)
{
Argument.EnsureNotNull("response", response);
var facets = response.facets;
if (facets == null || facets.Count == 0)
{
return(Activator.CreateInstance(typeof(List <>).MakeGenericType(elementType)));
}
return(manyMethodInfo
.MakeGenericMethod(elementType)
.Invoke(this, new object[] { response.facets }));
}
public void SimpleSelectProducesValidMaterializer()
{
var translation = ElasticQueryTranslator.Translate(Mapping, Robots.Expression);
var response = new ElasticResponse {
hits = new Hits {
hits = new List <Hit>()
}
};
Assert.NotNull(translation.Materializer);
var materialized = translation.Materializer.Materialize(response);
Assert.IsAssignableFrom <IEnumerable <Robot> >(materialized);
Assert.Empty((IEnumerable <Robot>)materialized);
}
/// <inheritdoc/>
public async Task <object> ExecuteAsync(Expression expression, CancellationToken cancellationToken = default(CancellationToken))
{
Argument.EnsureNotNull(nameof(expression), expression);
var translation = ElasticQueryTranslator.Translate(Mapping, expression);
Log.Debug(null, null, "Executing query against document '{0}'", translation.SearchRequest.DocumentType);
try
{
ElasticResponse response;
if (translation.SearchRequest.Filter == ConstantCriteria.False)
{
response = new ElasticResponse();
}
else
{
response = await requestProcessor.SearchAsync(translation.SearchRequest, cancellationToken);
if (response == null)
{
throw new InvalidOperationException("No HTTP response received.");
}
}
var result = translation.Materializer.Materialize(response);
if (response.hits != null)
{
var hits = response.hits.hits;
if (hits != null && hits.Capacity > 4096)
{
// If the response has a large number of hits then the List<T> instance might end up allocating an array on the large object heap.
// This means that the elements in that array can survive multiple rounds of garbage collection, even if they are not actually
// reachable anymore.
// Clearing out the collection after we materialized the result means the elements can be freed up.
hits.Clear();
}
}
return(result);
}
catch (AggregateException ex)
{
ExceptionDispatchInfo.Capture(ex.InnerException).Throw();
return(null); // Never called, as the above code re-throws
}
}
/// <summary>
/// Add to response fields that needs to read highlighted info.
/// </summary>
/// <param name="response">ElasticResponse to obtain the existence of a result.</param>
/// <returns>Return result of next materializer</returns>
public override object Materialize(ElasticResponse response)
{
foreach (var hit in response.hits.hits)
{
if (hit.highlight == null)
{
continue;
}
foreach (var prop in hit.highlight.Properties())
{
hit._source.Add($"{prop.Name}_highlight", prop.Value);
}
}
return(base.Materialize(response));
}
/// <summary>
/// Add to response fields that needs to read highlighted info.
/// </summary>
/// <param name="response">ElasticResponse to obtain the existence of a result.</param>
/// <returns>Return result of next materializer</returns>
public override object Materialize(ElasticResponse response)
{
foreach (var hit in response.Hits.Hits)
{
if (hit.Highlight == null)
{
continue;
}
foreach (var prop in hit.Highlight.Properties())
{
hit.Source.Add(string.Format("{0}_highlight", prop.Name), prop.Value);
}
}
return(base.Materialize(response));
}
